Nickel(II) removal from water using silica-based hybrid adsorbents: Fabrication and adsorption kinetics

The differences in the surface color of the original sample A and the adsorbed showed that nickel(II) ions have been absorbed on the surface of the hybrid adsorbent. These findings suggest that this type of adsorbent can be potentially applied in the separation and recovery of nickel(II) ions from Ni-containing wastewater.132